Doesn't seem like it was supposed to be temporary - you made such a big deal out of it.
This thread is bordering on "bad quality". Step up your presentation (and your grammar...), or I will be forced to lock the thread. You need to seriously take some time and think, "would I be proud of how this park looked if I actually owned it?".
EDIT: Don't reply to the thread saying, "I'm sorry" or "I will". Just take care of it. Please.
Locking a thread because it's not up to your personal standard? Geeze, that's a bit pretentious.
I think the park looks fine, better than alot of other parks I've seen in fact. It's really imaginative.
The only suggestion I have is to add some landscape. Bushes on the boarders of your paths can do wonders.